All names: Gaia DR2 1021452731770726016, Gaia DR3 1021452731770726016, PG 0938+550, 2MASS J09420950+5447126, GALEX J094209.4+544712, SBSS 0938+550B, WDJ094209.50+544712.61, LAMOST J094209.49+544712.5, SDSS J094209.48+544712.4, SDSS J094209.47+544712.4, LAMOST J094209.41+544712.4, TIC 328629385, Gaia EDR3 1021452731770726016, WD 0938+550, MaNGA 3-151067713
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 42 09.37 (0.3) | 09 42 09.37 (0.2) | 09 42 09.37 | 09 42 09.49 (0.3) | 09 42 09.37 | 09 42 09.12 | |||||||
| Declination | 54 47 12.14 (0.2) | 54 47 12.15 (0.3) | 54 47 12.14 | 54 47 12.55 (0.2) | 54 47 12.15 | 54 47 12.12 | |||||||
| Spectral type | DA | DAZ | DA | DA | DA2.6 | DA4 | |||||||
| Effective temperature | [K] | 14559.0 | 18277.0 (283) | 19150.0 (315) | 18530.0 (303) | 16668.0 (99) | |||||||
| log(g) | [cgs] | 7.20 | 8.11 (0.05) | 8.23 (0.05) | 8.10 (0.05) | 8.12 (0.02) | |||||||
| Mass | [M☉] | 0.285 | 0.68 (0.03) | 0.76 (0.03) | 0.68 (0.03) | 0.685 (0.02) | |||||||
| log(Luminosity) | [L☉] | -1.80 | |||||||||||
| Cooling age | [Gyr] | 0.0930 | 0.1479 | ||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(C/H) | |||||||||||||
| log(N/H) | |||||||||||||
| log(O/H) | |||||||||||||
| log(Na/H) | |||||||||||||
| log(Mg/H) | |||||||||||||
| log(Al/H) | |||||||||||||
| log(Si/H) | |||||||||||||
| log(P/H) | |||||||||||||
| log(S/H) | |||||||||||||
| log(Sc/H) | |||||||||||||
| log(Ti/H) | |||||||||||||
| log(Cr/H) | |||||||||||||
| log(Mn/H) | |||||||||||||
| log(Fe/H) | |||||||||||||
| log(Ni/H) | |||||||||||||
| Parallax | [mas] | 19.49 (0.4) | 11.65 (0.4) | 19.49 | 19.49 (0.4) | 11.65 (0.4) | |||||||
| Distance | [pc] | 51.31 (1) | 85.81 (3) | 53.00 | 57.00 | 51.31 | 51.31 (1) | 85.81 (3) | |||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -65.62229057 (0.3) | -72.58578998 (0.5) | -65.622 (0.3) | -72.58578998 | ||||||||
| Proper motion (declination) | [mas/yr] | -25.72297309 (0.3) | -29.5544148 (0.5) | -25.723 (0.3) | -29.5544148 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 15.20 | ||||||||||||
| V magnitude | 14.82 | ||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 15.18 (0.04) | ||||||||||||
| H magnitude | 15.31 (0.03) | ||||||||||||
| K magnitude | 15.40 (0.05) | ||||||||||||
| u magnitude | 14.82 (0.003) | 14.84 (0.004) | |||||||||||
| g magnitude | 14.68 (0.003) | 14.69 (0.003) | |||||||||||
| r magnitude | 15.02 (0.003) | 15.02 (0.003) | |||||||||||
| i magnitude | 15.27 (0.003) | 15.27 (0.003) | |||||||||||
| z magnitude | 15.57 (0.006) | 15.56 (0.006) | |||||||||||
| G magnitude | 14.85 (0.0007) | 14.87 | 14.85 | 14.85 (0.003) | 14.87 | ||||||||
| BP magnitude | 14.79 (0.0007) | 14.77 | 14.77 | ||||||||||
| RP magnitude | 14.98 (0.001) | 14.98 | 14.98 | ||||||||||
| Pan g magnitude | 14.75 (0.003) | ||||||||||||
| Pan r magnitude | 15.03 (0.002) | ||||||||||||
| Pan i magnitude | 15.30 (0.006) | ||||||||||||
| Pan z magnitude | 15.54 (0.005) | ||||||||||||
| Pan y magnitude | 15.72 (0.005) | ||||||||||||
| E(B-V) | 0.001 | ||||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.